Question : 421.4.3.2 service not available
I have just set up the new small business server 2008
and I have a problem receiving e-mail from external clients
but internally we can send e-mail to each other fine and from a command line-also send e-mail to an internal e-mail box
I’m using the standard SMTP port 25
whenever anybody tries from externally they get 421.4.3.2 service not available
I have checked my firewall and port 25 is open
the IP address is 78.32.179.162 if you have the time to try it
any help would be much appreciated
please be patient as I do not have a e-mail server and I will have to keep looking back here for your reply
Thank you in advance